Bi
Bismuth-212m
Protons (Z)
83
Neutrons (N)
129
Mass number
212
Half-Life
25.0 m
Abundance
---
Mass
211.992 u
Mass Excess
-7,870.0 keV
Spin
(8-)
Discovered
1978
Binding energy per nucleon
7,802 keV
Neutron separation energy
4,082 keV
Proton separation energy
4,666 keV
Decay Mode
Decay chain
- BiBismuth-212Z 83 · N 12925.0 m
- α67%
- β⁻100%